Overview
Kearsarge Pass is one of the Eastern Sierra's most rewarding day hikes: a direct climb to an 11,760-foot pass on the John Muir Trail boundary, with views that open into some of the most dramatic wilderness in California. It's a consistent pick in guides to the best hikes near Los Angeles as a top accessible high-altitude Sierra destination. The 8.4-mile out-and-back from Onion Valley gains 2,600 feet and stays above 9,000 feet the entire time, which means the altitude is a factor from the first step. What makes Kearsarge exceptional, beyond the view from the pass itself, is everything you pass on the way up: a chain of alpine lakes at progressively higher elevations, open granite basins, and the kind of Sierra sky that makes you understand why people spend entire summers up here.
The pass sits on the boundary between Inyo National Forest and Kings Canyon National Park. From the top, the view west drops into the Bullfrog Lake basin and the Kearsarge Lakes, a cluster of six linked alpine lakes at about 11,000 feet. Beyond them, the Kings Canyon backcountry stretches all the way to the Palisades and beyond. The view east looks back down the Onion Valley drainage to the Owens Valley floor, 5,000 feet below, with the White Mountains and the Nevada border visible on a clear day.
No day-use permit is required, which makes Kearsarge Pass one of the more accessible JMT connection points in the Sierra. Overnight hikers entering Kings Canyon National Park from the pass do need a wilderness permit, and those fill fast. For day hikers, the only thing standing between you and one of the finest views in the Sierra is the 2,600-foot climb.
The Route
Miles 0 to 2: Onion Valley to Lower Kearsarge Lakes
The trail begins at the Onion Valley Campground at 9,185 feet, the highest trailhead in the Eastern Sierra accessible by paved road. From the parking area, the path climbs immediately and does not level off. The first two miles gain about 1,200 feet through a series of tight switchbacks on open granite slopes with scattered whitebark pine and foxtail pine.
The Owens Valley is visible from the first quarter mile, and the view only improves as you gain elevation. At about 1.5 miles, Gilbert Lake appears below and to your left, a small alpine tarn at roughly 10,400 feet. At 2 miles, Flower Lake comes into view on your right, and the Kearsarge Lakes basin begins to reveal itself ahead and above. This stretch of trail, with lakes appearing in sequence and the granite peaks closing in from all sides, captures what people mean when they describe the Sierra Nevada as a different world.
Miles 2 to 3.5: Upper Basin and Heart Lake
Above Flower Lake, the trail continues its switchback climb through increasingly sparse vegetation. The whitebark pine gives way to nothing but rock, water, and sky above about 10,800 feet. At roughly 2.8 miles, the trail passes Heart Lake, a small tarn at 11,000 feet, and begins the final push toward the pass.
The terrain here is high-altitude granite: angular, loose in places, and completely exposed. Snow patches linger in the north-facing gullies on either side of the trail well into July, and in heavy years they persist into August. The air is noticeably thinner than at the trailhead. If you drove up from the valley the morning of the hike, you will feel the altitude at this point regardless of your fitness level. Slow down, breathe deliberately, and drink water consistently.
Miles 3.5 to 4.2: Final Switchbacks to the Pass
The last 0.7 miles below the pass are the hardest. The trail zigzags up a steep headwall on rock and talus, with no shelter from wind or sun. The gradient is steep enough that each switchback feels like progress. At 11,760 feet, the pass arrives without warning: you crest the headwall and the entire Kings Canyon backcountry opens up in front of you.
At the Pass
The view from Kearsarge Pass is one of those views you stop in front of and just stand still. The Kearsarge Lakes spread below on the west side, their color ranging from deep blue to turquoise depending on depth and time of day. Bullfrog Lake is visible further down the drainage. The peaks of the Kings-Kern Divide and the Palisades dominate the horizon to the south and southwest. On the east side, the Owens Valley floor is a thin brown line far below, with the White Mountains rising to the northeast. Wind at the pass is common and often cold, even in August. Bring layers.
Return by the same route. The descent is fast: budget about 2 hours from the pass back to the trailhead.
When to Visit
July through mid-August: The snow clears from the upper switchbacks by early to mid-July in an average year. Afternoon thunderstorms are possible, sometimes severe. Start early (trailhead by 6:30 AM) and plan to be heading down from the pass by noon if clouds are building. The wildflower bloom in the basin below Flower Lake peaks in mid-July.
Late August through September: Arguably the best conditions. Storms are less frequent, the trail is fully clear, crowds thin slightly from peak July levels, and the light in September has a clarity and warmth that makes photography exceptional. Temperatures at the pass are cool even in late August (40s to 50s with wind). Carry a warm layer.
October: A gamble. Onion Valley Road typically stays open through October, but early Sierra snowstorms can close the pass with little warning. If the weather cooperates, fall in the Owens Valley below is beautiful and the trail is nearly empty. Check current conditions before committing to an October trip.
Practical Details
No day-use permit is required for Kearsarge Pass. Overnight hikers crossing into Kings Canyon National Park need a wilderness permit through Recreation.gov. The Kearsarge Pass overnight quota is competitive and sells out quickly for summer weekends: reserve six months in advance.
Dogs are allowed on leash in Inyo National Forest up to the park boundary at the pass. Dogs are not permitted in Kings Canyon National Park, so if you plan to cross over, leave your dog at home or arrange a car camp at Onion Valley. The rocky upper trail is hard on dog paws. Bring booties if your dog's pads are not conditioned to talus.
No day-use fee at the trailhead. An America the Beautiful pass is not required here. Bear canisters are required for all overnight trips and not needed for day hikes. The Onion Valley Campground lot has bear boxes.
Carry at least 3 liters of water per person. The trail passes several streams in the lower basin (Onion Valley Creek, outlets from Gilbert and Flower Lakes) that can be filtered. Above Heart Lake, there is no reliable water until the pass.
Onion Valley Road is a paved but steep and winding 13-mile drive from Independence. It closes in winter, typically from November through May depending on snowpack. The road is passable for any vehicle in summer.
Getting There
From Bishop, take US-395 South for 15 miles to the town of Independence. Turn west on Market Street (Onion Valley Road) and follow it 13 miles to the trailhead at Onion Valley Campground. The road climbs from 3,900 feet in Independence to 9,185 feet at the trailhead. Budget 30 minutes for the drive from US-395.
From Lone Pine, take US-395 North for about 17 miles to Independence and follow the directions above. Total drive from Lone Pine is about 50 minutes.
From Bishop, Onion Valley Road is about 45 minutes total including the drive from US-395. The nearest services (gas, food, gear, lodging) are in Independence and Bishop. Independence is a small town with limited services: gas, a few motels, and a small market. Bishop, 45 miles north, has full services including outdoor gear shops.
The Bottom Line
Kearsarge Pass is the most accessible introduction to true JMT-corridor wilderness in the Eastern Sierra. The 8.4 miles and 2,600 feet are honest work, the altitude demands respect, and the view from the top is worth every switchback. It is the kind of hike that turns people into Sierra Nevada regulars.
For other high-pass experiences in Inyo National Forest, Bishop Pass (12 miles, 11,972 feet) to the north is a longer and equally impressive option. Hilton Lakes in the Rock Creek drainage offers a shorter route to dramatic alpine lakes without the pass climb. At the far northern end of the forest near Mammoth, Duck Pass and Mono Pass follow a similar lake-to-pass formula. For a completely different perspective on Inyo, the Methuselah Trail in the White Mountains is a 4,000-year-old bristlecone pine grove accessible on the same day. The leave no trace principles are worth reviewing before any JMT-corridor trip, where high use concentrates in fragile alpine terrain.